Garritano, S, De Santi, C, Silvestri, R, Melaiu, O, Cipollini, M, Barone, E, Lucchi, M, Barale, R, Mutti, L, Gemignani, F, Bonotti, A, Foddis, R, Cristaudo, A and Landi, S 2014, 'A common polymorphism within MSLN Affects miR-611 binding site and soluble mesothelin levels in healthy people' , Journal of Thoracic Oncology, 9 (11) , pp. 1662-1668.
Full text not available from this repository. (Request a copy)Abstract
INTRODUCTION:
Soluble mesothelin related peptide (SMRP) was proposed as a promising diagnostic marker for malignant pleural mesothelioma (MPM). In a previous study, we found that rs1057147 within the 3' untranslated region of MSLN gene was associated with SMRP levels. Thus, we aimed to (1) confirm the previous association on a large series of volunteers and (2) test the hypothesis that the SNP could affect microRNA binding sites.
METHODS:
The association analysis was verified in 759 subjects. Then, in silico predictions highlighted miR-611 and miR-887 as candidate miRNAs binding to the polymorphic site. Thus, chimeric constructs bearing the alternative alleles (G > A) were assayed alone or in cotransfection with the miRNA mimics, with dual luciferase reporter assay in non-MPM Met-5A cells. The miRNAs were also assayed by western blot analysis for their ability to down-regulate endogenous mesothelin in the MPM Mero-14 cell line.
RESULTS:
We confirmed that, among non-MPM volunteers, GG homozygotes have the lowest SMRP levels. When the genotype is taken into account, the specificity of SMRP as biomarker improves from 79.7% to 85.3%. Dual-luciferase assays showed a significantly lower reporter activity when the vector harbored the G allele as compared to A allele. miR-887 mimic caused a reduced reporter activity of vectors harboring A or G alleles, while miR-611 was effective only on the vector harboring the G allele. Transfection of these miRNAs into Mero-14 cells significantly reduced endogenous MSLN protein.
CONCLUSION:
SMRP performance as diagnostic biomarker improved by considering the genotype rs1057147. This polymorphism most likely affects a binding site for miR-611.
| Item Type: | Article |
|---|---|
| Schools: | Schools > School of Environment and Life Sciences |
| Journal or Publication Title: | Journal of Thoracic Oncology |
| Publisher: | Wolters Kluwer |
| Refereed: | Yes |
| ISSN: | 1556-0864 |
| Related URLs: | |
| Funders: | Buzzi Foundation (Italy) |
| Depositing User: | D Mann |
| Date Deposited: | 02 Feb 2015 18:16 |
| Last Modified: | 10 Oct 2018 09:41 |
| URI: | http://usir.salford.ac.uk/id/eprint/33764 |
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